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3 October 1988 Infrared Process Analysers With Minimal Sampling Requirements
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The well known advantages of process infrared analysers in selectivity and stability have been somewhat offset in practice by the need for sampling systems of varying degrees of complexity. These can add to 100% of the basic analyser cost. Even more significantly the sampling system may not be as reliable as the analyser at the centre of it. It is now possible to minimise sampling requirements and three specified examples were presented. The ideal analyser, whatever technique it uses, would be as easy to apply as a temperature sensor. So this would suggest a probe, immersed in the sample, be it gas or liquid, and an electronic unit to connect the infrared signal to the concentration being measured. It is now possible to come close to this. To do this, there must be a way of doing or making unnecessary each of the functions of the concentrated sampling systems.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R Hutchinson "Infrared Process Analysers With Minimal Sampling Requirements", Proc. SPIE 0917, Recent Developments and Applications of Infrared Analytical Instruments, (3 October 1988);

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